Folding bicycle frame and folding electric bicycle
By integrating a support frame and wheels into the rear frame of the folding electric bicycle, the problems of difficulty in dragging and insufficient functionality in the folded state are solved, enabling convenient rolling and stable switching of the bicycle, improving the user experience and market competitiveness.
Patent Information
- Application Number
- CN202520064380.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Existing folding electric bicycles are difficult to tow when folded, lack structural durability, and have insufficient functionality when folded, especially lacking rolling support, which affects the user experience and portability.
Design a folding frame that allows the folded bicycle to roll by installing a support frame on the rear frame and integrating support rollers, and achieves stable switching between unfolded and folded states through an unfolding pin assembly and a folding locking assembly.
The bicycle can be easily rolled and moved like a suitcase after folding, reducing physical exertion, improving portability and user experience, and is suitable for a variety of use scenarios, especially significantly improving convenience when transferring between long-distance transportation modes.
Smart Images
Figure CN223803711U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of bicycle, especially relates to a folding frame and folding electric bicycle. BACKGROUND
[0002] Folding electric bicycle is a kind of bicycle with folding function, through the hinge and lock catch mechanism of special design, can be folded into smaller volume when not using frame, wheel and other components, it is convenient to store and carry.Its design takes into account the portability and structural strength, suitable for urban commuting, short trip and the combined use of various traffic modes, such as subway, bus operation.Folding electric bicycle is diverse, including the middle shaft folding, rear fork folding and whole vehicle folding etc., different models have some emphasis on weight, folding efficiency and riding performance, provide ideal solution for users in the space limited or need portable scene.
[0003] At present, folding electric bicycle is widely favored by portability and lightness, but there are still many problems and deficiencies in actual use, which affect its use experience and practicability.Firstly, the dragging difficulty in folding state is a common problem.Although the volume is reduced after folding, it is convenient to store, but most folding electric bicycles still need to rely on lifting or pulling way to move after folding, which is acceptable in short distance, but if the distance is longer, it will cause great physical consumption, especially for the users with less strength or the scene needing long time carrying, which is easy to bring burden and inconvenience.
[0004] Secondly, the structural design of folding electric bicycle usually takes folding efficiency as the main consideration, resulting in compromise in stability and durability.Part of the models after long time use, hinge, lock catch and other key components are easy to loosen or wear, which affects the overall riding safety.In addition, due to the folding design needs to consider lightweight and strength, the carrying capacity of the frame is reduced compared with ordinary bicycles, which is difficult to meet some special needs such as carrying or heavy load riding.
[0005] Finally, the functionality in folding state is still insufficient.Most folding electric bicycles completely lose the rolling support function after folding, which cannot realize easy movement through rolling like luggage, which makes the user's burden heavier in long distance carrying, especially in subway, bus and other multi-section travel.
[0006] In summary, folding electric bicycle still has a lot of room for improvement in dragging convenience, structural durability and functionality after folding, especially how to realize the rolling support function in folding state, which becomes an important direction to improve the use experience. UTILITY MODEL CONTENTS
[0007] The utility model provides a folding frame and folding electric bicycle for solving the problems of inconvenience of dragging, insufficient structural durability, irregular shape after folding, and lack of functions in folding state of the existing folding electric bicycle.
[0008] The utility model discloses a folding frame, including the front frame for installing the front wheel and the rear frame for installing the rear wheel, the front frame is equipped with five through -hole, it is characterized by: the front frame and rear frame are connected through folding turnover shaft, folding turnover shaft with five through -hole of the front frame is coaxial, the rear frame is formed unfolding state and folding state through rotating around folding turnover shaft, the support gyro wheel is installed on the rear frame, and the front frame with the rear frame is equipped with unfolding pin joint component and folding locking component, and the rear frame unfolding state, the folding frame is supported by the front wheel and rear wheel, and the front frame with the rear frame is connected by unfolding pin joint component, and the rear frame folding state, folding frame is supported by the support gyro wheel, and the front frame with the rear frame is fixed by folding locking component.
[0009] In the above technical solution, preferably, the rear frame is installed with a support frame, the support frame forms a frame body symmetrically arranged on both sides of the rear wheel, and the support frame is installed with the support gyro wheels symmetrically arranged on both sides of the rear wheel.
[0010] In the above technical solution, preferably, the rear frame comprises a rear fork frame and a rear support frame, the front end of the rear fork frame is connected to the front frame through the folding turnover shaft, the lower end of the rear support frame is connected to the rear fork frame, and the upper end of the rear support frame is connected to the front frame through the unfolding pin joint component.
[0011] In the above technical solution, preferably, the upper end of the rear support frame is connected to a shock absorber, the unfolding pin joint component comprises an unfolding pin hole arranged at the front end of the shock absorber and an unfolding pin installed at the rear part of the front frame and inserted into the unfolding pin hole.
[0012] In the above technical solution, preferably, the rear part of the front frame is provided with a hinged seat, the hinged seat is provided with a slot, the unfolding pin is installed in the hinged seat, the front end of the shock absorber is a plug inserted into the slot, and the unfolding pin hole is arranged on the plug.
[0013] In the above technical solution, preferably, the front frame is provided with a five-hole sleeve shaft, the center hole of the five-hole sleeve shaft forms the five through-hole, the five-hole sleeve shaft forms the folding turnover shaft, the front end of the rear fork frame is provided with a shaft sleeve, the shaft sleeve is sleeved on the five-hole sleeve shaft and forms a rotating pair.
[0014] In the above technical solution, preferably, the folding locking assembly comprises a radial pin hole arranged on the shaft sleeve and a folding pin installed on the front frame and inserted into the radial pin hole.
[0015] In the above technical solution, preferably, the front part and the rear part of the support frame are respectively provided with two groups of support rollers in a left-right symmetrical manner.
[0016] The utility model provides an innovative design's folding electric bicycle, through installing support frame in rear frame integration, and setting up the auxiliary support's gyro wheel on support frame, make the folding bicycle have the rolling support function, have the following advantages and effect:
[0017] The design of support gyro wheel makes the folding bicycle can move like a suitcase, avoids the problem that traditional folding electric bicycle needs to carry or pull, greatly reduces the physical consumption of user, especially suitable for long distance movement between subway and bus station, greatly improves the portability.
[0018] Support gyro wheel is located in the non-critical position of the frame in the normal riding state after the bicycle is unfolded, does not affect the riding function or overall appearance design, ensures the seamless switching of folding and unfolding two states, adapts to various use scenarios, including urban commuting, short trip etc.
[0019] The design solves the functional deficiency of traditional folding electric bicycle in the folding state through innovative structural improvement, makes the storage and movement of folding more convenient, brings great convenience to the user, especially in multi-section transportation tool transfer, significantly improves the use experience.
[0020] This design takes into account the portability and functionality, meets the needs of urban users for folding electric bicycles in multiple scenarios, provides a new improvement direction for folding electric bicycles on the market, has good market competitiveness and promotion prospect.
[0021] As described above, the folding electric bicycle integrates support frame and gyro wheel, innovatively gives the rolling support function in the folding state, not only solves the dragging problem of traditional folding electric bicycle, but also significantly improves the portability, use experience and market competitiveness, is a practical and innovative design scheme.
[0022] The second purpose of the utility model provides a kind of folding electric bicycle, its bicycle assembly above-mentioned frame ACCURACY OF DRAWINGS
[0023] Figure 1 It is the structural schematic diagram of the electric bicycle of the utility model;
[0024] Figure 2 isFigure 1 A part of enlarged view of Fig. 1;
[0025] Figure 3 Fig. 2 is a schematic view of the mounting structure of the folding and turning shaft in the utility model;
[0026] Figure 4 Fig. 3 is a schematic view of the structure of the hinge seat in the utility model;
[0027] Figure 5 Fig. 4 is a schematic view of the structure of the folding state in the utility model. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear and understandable, the utility model is further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.
[0029] In order to solve the problems of the existing folding electric bicycle, such as inconvenience in dragging, insufficient structural durability, irregular shape after folding, and lack of functionality in the folding state, the utility model provides a folding frame and a folding electric bicycle. In order to further illustrate the structure of the utility model, the following detailed description is combined with the drawings:
[0030] Embodiment one
[0031] Please refer to Figure 1 and Figure 2 A folding frame, comprising a front frame 1 for mounting a front wheel and a rear frame 2 for mounting a rear wheel, the front frame is provided with five through holes. Specifically, the front part of the front frame is provided with a front fork sleeve 1-1, which is used to fit the front fork, and the front wheel is mounted on the front fork. The rear frame is a frame body for mounting the rear wheel. The five through holes are an important part of the front frame in the bicycle frame, and the core is a middle shaft shell for mounting a middle shaft assembly, which is usually cylindrical and has a specific inner diameter and thread or press-in design to adapt to different types of middle shaft systems.
[0032] The front frame and the rear frame are connected by a folding and overturning shaft 1-2, which is coaxial with the five-hole of the front frame. The rear frame is formed in an unfolded state and a folded state by rotating around the folding and overturning shaft, so that the tightness of the chain does not change in the folded state. Specifically, the rear frame includes a rear fork 2-1 and a rear support 2-2. The front end of the rear fork is connected to the front frame through the folding and overturning shaft, and the lower end of the rear support is connected to the rear fork. The rear frame composed of the rear fork and the rear support is of a conventional structure. Generally, the rear fork is a horizontal fork, and the rear support is a diagonal support frame body at an acute angle with the rear fork. The connecting part of the two forms a seat plate for mounting the rear wheel. The front frame is provided with a five-hole sleeve shaft. The central hole of the five-hole sleeve shaft forms a five-hole. The five-hole sleeve shaft forms the folding and overturning shaft. The front end of the rear fork is provided with a shaft sleeve 2-3. The shaft sleeve is sleeved on the five-hole sleeve shaft and forms a rotating pair. Specifically, the shaft sleeve is welded on the front end of the rear fork. The two side parts of the five-hole sleeve shaft form shaft head parts protruding to the sides. The shaft sleeves at the front ends of the two symmetrical rear forks are fitted on the shaft head parts of the five-hole sleeve shaft through bearings. The inner side surface of the shaft sleeve is combined with the outer ring of the bearing, and the inner ring of the bearing is combined with the outer side surface of the five-hole sleeve shaft, so as to realize the mounting mode of the shaft sleeve rotating around the five-hole sleeve shaft.
[0033] Support rollers 3 are mounted on the rear frame. Specifically, the rear frame is provided with support frames 4. The support frames form frame bodies symmetrically arranged on both sides of the rear wheel. The support frames are provided with support rollers symmetrically arranged on both sides of the rear wheel. The front part and the rear part of the support frame are respectively provided with two groups of support rollers in a symmetrical manner. In this embodiment, the support frames are formed of metal pipes. The support frames are connected to the rear frame through two pin shafts. The two groups of support rollers are mounted on the support frames through shafts. The support rollers can rotate around their own axes. In this embodiment, further, the upper part of the support frame forms a carrying frame located above the rear wheel. The carrying frame has a carrying function. A top wheel is arranged at the lower part of the carrying frame. The top wheel is supported on the rear support, so as to transfer the carrying force to the rear frame and improve the carrying capacity. In the unfolded state of the rear frame, one group of symmetrical support rollers is located on the left and right sides of the saddle stand pipe of the front frame, i.e. below the saddle. The two sides of the carrying frame are lateral frames with the same shape. A horizontal frame rod is connected between the upper edges of the two lateral frames to form the carrying frame. In this embodiment, the carrying frame is concave downward, so that the support rollers at the two sides of the carrying frame form protruding support structures. This frame design makes the folding electric bicycle more compact in the folded state.
[0034] The rear frame is formed in an unfolded state and a folded state by rotating around the folding and overturning shaft, as shown in Figure 5The unfolded state is the state of the bicycle as a riding tool, and the folded state is the state of the bicycle with reduced size. In the unfolded state of the rear frame, the folding frame is supported by the front wheel and the rear wheel; in the folded state of the rear frame, the folding frame is supported by the supporting roller. In the unfolded state, the upper edge of the supporting roller is above the upper edge of the rear wheel, and after the rear frame is turned by about 180° around the folding and overturning shaft, the lower edge of the supporting roller is below the lower edge of the wheel to form support.
[0035] The unfolded pin joint assembly and the folding locking assembly are arranged between the front frame and the rear frame. In the unfolded state of the rear frame, the front frame and the rear frame are connected by the unfolded pin joint assembly, and the pin joint assembly is connected to maintain the stability of the connection between the front frame and the rear frame, so that the two form a frame with a stable structure. In the folded state of the rear frame, the front frame and the rear frame are fixed by the folding locking assembly, and the folding locking assembly maintains the folding position of the rear frame and the front frame fixed, so that the two form a fixed folding structure.
[0036] Specifically, the upper end of the rear support is connected to the shock absorber 5, and the unfolded pin joint assembly includes an unfolded pin hole arranged at the front end of the shock absorber and an unfolded pin 6 installed at the rear of the front frame and inserted into the unfolded pin hole. The rear of the front frame is provided with a hinged seat 7, please refer to Figure 4 , the hinged seat is provided with a slot 7-1, the unfolded pin is installed on the hinged seat, the front end of the shock absorber is a plug 8 inserted into the slot, and the unfolded pin hole is arranged on the plug. Further, the shock absorber is a linear shock absorber, the rear end of the shock absorber is fixedly connected to the upper end of the rear support, and the axis extends along the length direction of the rear support. The hinged seat is a support block-shaped part welded at the rear of the saddle stand pipe of the front frame, the slot is an open slot formed at the rear of the hinged block, and the two sides of the slot form a clamping groove 7-2 with a guide flared structure of wide outside and narrow inside. The two sides of the plug at the front end of the shock absorber are provided with support shafts 9, and in the process of inserting the plug into the slot, the support shafts are guided by the clamping grooves and finally serve as the support of the rotation shaft. The unfolded pin is selected to be a linear control pin, and the unfolded pin hole is arranged on the plug at the front end of the shock absorber. In the inserted state, the unfolded pin hole and the unfolded pin are gap matched to ensure the circumferential movement allowance of the support shaft in the support state of the front end of the shock absorber.
[0037] Please refer to Figure 3 , the folding locking assembly includes a radial pin hole 10 arranged on the shaft sleeve and a folding pin 11 installed on the front frame and inserted into the radial pin hole. In the unfolded state of the rear frame, the radial pin hole and the folding pin are misaligned, and by rotating the shaft sleeve relative to the five-way sleeve shaft, the rear frame changes from the unfolded state to the folded state, the radial pin hole and the folding pin are aligned, and the folding pin is inserted into the radial pin hole to fix the positions of the front frame and the rear frame in the folded state. The folding pin can be selected to be a linear control pin.
[0038] The wire control bolt can be selected from the existing mechanical device controlled by wire, and is applied to the adjustable seat rod and shock absorber locking system of the mountain bike, and the bolt is driven to realize the locking or unlocking operation by pulling the wire through the handle.
[0039] Embodiment two
[0040] In this embodiment, a folding electric bicycle is provided, the electric bicycle is equipped with the frame described in embodiment one, the middle tube of the front fork of the frame and the front fork of the frame are both installed with folders to achieve the optimal folding effect. In this embodiment, the middle tube of the front frame is internally provided with a battery, and the electric bicycle is a three-fold frame, that is, the front frame itself is foldable, the front fork has a folding function, and the rear frame can be folded by turning over.
[0041] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A folding frame comprising a front frame for mounting a front wheel and a rear frame for mounting a rear wheel, the front frame being provided with five holes, characterized in that: The front frame and the rear frame are connected by a folding and overturning shaft, the folding and overturning shaft is coaxial with five through holes of the front frame, the rear frame is formed in an unfolded state and a folded state by rotating around the folding and overturning shaft, support rollers are installed on the rear frame, the front frame and the rear frame are connected by an unfolding pin joint assembly and a folding locking assembly, the folding bicycle is supported by front wheels and rear wheels in the unfolded state of the rear frame, and the front frame and the rear frame are connected by the unfolding pin joint assembly, the folding bicycle is supported by the support rollers in the folded state of the rear frame, and the front frame and the rear frame are fixed by the folding locking assembly.
2. The folding frame of claim 1, wherein: The rear frame is provided with support frames which are symmetrically arranged on both sides of the rear wheels, and the support rollers are symmetrically arranged on both sides of the rear wheels and installed on the support frames.
3. The folding frame of claim 2, wherein: The rear frame comprises a rear fork frame and a rear support frame, the front end of the rear fork frame is connected to the front frame through the folding and overturning shaft, the lower end of the rear support frame is connected to the rear fork frame, and the upper end of the rear support frame is connected to the front frame through the unfolding pin joint assembly.
4. The folding frame of claim 3, wherein: The upper end of the rear support frame is connected to a shock absorber, the unfolding pin joint assembly comprises an unfolding pin hole arranged at the front end of the shock absorber and an unfolding pin installed on the rear part of the front frame and inserted into the unfolding pin hole.
5. The folding frame of claim 4, wherein: The rear part of the front frame is provided with a hinged seat, the hinged seat is provided with a slot, the unfolding pin is installed on the hinged seat, the front end of the shock absorber is a plug inserted into the slot, and the unfolding pin hole is arranged on the plug.
6. The folding frame of claim 5, wherein: The front frame is provided with a five-hole sleeve shaft, a central hole of the five-hole sleeve shaft forms the five through holes, the five-hole sleeve shaft forms the folding and overturning shaft, the front end of the rear fork frame is provided with a shaft sleeve, the shaft sleeve is sleeved on the five-hole sleeve shaft and forms a rotating pair.
7. The folding frame of claim 6, wherein: The folding locking assembly comprises a radial pin hole arranged on the shaft sleeve and a folding pin installed on the front frame and inserted into the radial pin hole.
8. The folding frame of claim 2, wherein: The front part and the rear part of the support frame are respectively provided with two groups of support rollers in a left-right symmetric manner.
9. A folding electric bicycle, characterized by: The folding electric bicycle is provided with the frame according to any one of claims 1-8.